Howdy. My travel trailer has a charger converter, something my previous trailer from the 1970s did not. The trailer will be sitting for one month before our next trip. Is it OK to leave the trailer plugged in to shore power and let the charger converter maintain the battery? Is that too much wear (if that’s the right word) on the converter? I do have a battery maintenance device, new fangled “smart” trickle charger; would it be advisable to pull the battery and use that instead, vs the charger converter? Thank you!